US STOCKS-Wall St to drop at open on global economic worries By: Reuters: Company News January 14, 2015 at 09:07 AM EST * Futures off: Dow 237 pts, S&P 25.25 pts, Nasdaq 41 pts (Adds quote, data, updates futures prices) Read More >> Related Stocks: Freeport-McMoRan JPMorgan Chase & Co Tesla, Inc. Wells Fargo Ziopharm Oncology IN